<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8" />
    <link rel="stylesheet" href="css/style.css">
		<title>animation动画</title>
	</head>
	<body>
       <main>
            <div class="ani_first"></div>
            <div class="ani_second"><span></span></div>
            <div class="ani_third_box">
              <div class="ani_third"></div>
            </div>
       </main>
	</body>
</html>
